We have an update now on that outbreak of a stomach bug known as psych low spore ra. 372 cases across 15 states and counting. They say they now know what is causing it. Something found in millions of american kitchens right now, prepackaged salad mix. Dr. Richard besser has her story tonight. It's taken more than a month but at least in two states, iowa and nebraska, a culprit has been found, salad, a prewashed mix of lettuce and carrots has sickened people. The average weight loss, 10 pounds and can last for a month. Investigators found a connection between those people. They had all eaten the salad mix at home, restaurants or catered events. Health officials won't say the name of the brand involved but say it's no longer on the shelf so no one is at risk anymore. Tonight while people in two states have an answer, investigators in the other states work to figure out if the same food has made their people sick. Richard besser joins us. I'm surprised they're not naming the brand here. Why not? I'm a little surprised, too. They say it's no longer on the shelves. Until if the fda investigators the farms there is risk of more products coming to this country that is contaminated. Is there anything consumers can do to protect themselves? Produce is one of the riskiest things because we don't cook it. Unwashed produce, you want to wash it. For the prewashed get the coldest you can find, make sure it's far from its expiration date and use it right away. Now to big news for

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